Abstract

Current research suggests that there are three major groups of psychiatric conditions: the externalizing disorders (characterized by behavioural problems and lack of inhibition); the internalizing disorders (characterized by depression and anxiety) and the psychotic disorders (characterized by hallucinations and delusions, and typically leading to diagnoses such as schizophrenia and bipolar disorder). Abnormal conscious experience is evident in the latter two groups and especially the psychoses. Research shows that depression is associated with selective attention to negative information and a tendency to ruminate (brood about negative lief events). Anxiety is associated with vigilance for threatening information and abnormal meta‐cognitive beliefs (beliefs and worries about the content of consciousness). In the case of the psychotic disorders, research suggests that hallucinations are associated with difficulties in source monitoring (discriminating between self‐generated and external stimuli) and trauma‐linked dissociative states. Some delusional beliefs appear to be associated with anomalous experiences and, although a range of cognitive biases are involved, may arise partly as an attempt to make sense of these experiences.